CAJ | 학술논문

详细介绍了一种目前国内外研究较少的CTOA测试方法-显微形貌法的测试原理，并以紧凑拉伸试样为研究对象，将显微形貌法表面分离函数进行了简化。采用简化后计算公式计算得到被测X80管线钢试样正、反两面的稳态扩展临界CTOA值，即（CTOA）C分别为10.90°和10.65°，取二者平均值10.78°作为被测试样的（CTOA）C，相对其他CTOA测试方法的单侧表面测试结果更具说服力。
상세개소료일충목전국내외연구교소적CTOA측시방법-현미형모법적측시원리，병이긴주랍신시양위연구대상，장현미형모법표면분리함수진행료간화。채용간화후계산공식계산득도피측X80관선강시양정、반량면적은태확전림계CTOA치，즉（CTOA）C분별위10.90°화10.65°，취이자평균치10.78°작위피측시양적（CTOA）C，상대기타CTOA측시방법적단측표면측시결과경구설복력。
In this article,it detailedly introduced a kind of CTOA measurement method,which less studied at home and abroad-measurement theory of microscopic morphology method,taking compact tensile samples as the research object,the surface separation function of microscopic morphology method was simplified. The steady-state critical (CTOA)C of two surfa-ces of X80 pipeline steel sample was obtained through simplified computational formula,respectively 10.90° and 10.65°,took the average of 10.78° as the tested sample(CTOA)C . Relative to other CTOA test methods,the unilateral surface test results are more convincing data.